It is known and will be fixed at some point but just not at the moment. My guess is that it will be fixed in the time the beta version(s) roll out and they optimize the whole game for release candidate.

Wow dude, even though you are not able to use asian assets the map already feels like home in the screenshots! Can´t wait to test this one, it was one of my all time fav PR maps, lots of awesome memories in this one...
Keep on rocking!

If you feel that way that is OK, but saying they are puttin in the bare minimum is just mean/wrong. I for one think that the last 3 Versions of the game changed the game much more then any update before and the game is still alpha (so not finished) and there will be more stuff to come.
Why are helicopters not in? Well I can only guess that they want to make then feel and play really nice and also want enough anti air measures against them before putting them into the game. Also they are creating the models and animations from scratch, while the mod uses existing models of the unreal engine marked place thingy from what I understand.
The game is still being developed and they confirmed a dozen of times that they will not stop with version "1.0", so maybe some of your Kickstarter stuff will be put into the game in the future that is not in yet, if not there are always other games for you to play if you dont like the way Squad takes.

Well I myself love PR but cant really get into it anymore because of the graphics and old engine and because Squad is really getting there since v10. (In PR you had to duck jump over objects/walls like in squad before v10... so yeah it is kinda clunky nowadays)
What you are saying tactic wise is simply not true, transport/supply choppers in PR made the game so much more tactical and deep. Just drop troops way out somewhere in the map or quickly drop a crate on a position where a supply truck would never make it to... so much possibilities with the birds. Also dropping troops on rooftops of bigger buildings was a thing! (though we never got fast ropes... but hey we will in Squad... right?! RIGHT?!)
Just my 2 cents